GENERAL DESCRIPTION
The ADP3171 is a highly efficient output synchronous buck switching regulator controller optimized for converting a 5 V main supply into the auxiliary supply voltages required by processors and chipsets. The ADP3171 provides a fixed output voltage of 1.2 V at up to 15 A, depending on the power ratings of the external MOSFETs and inductor. The ADP3171 uses a current-mode, constant off time architecture to drive two N-channel MOSFETs at a programmable switching frequency that can be optimized for regulator size and efficiency.

FEATURES
Fixed 1.2 V N-Channel Synchronous Buck Driver
Two On-Board Linear Regulator Controllers
Total Accuracy ±1% over Temperature
High Efficiency Current-Mode Operation
Short Circuit Protection
Power Good Output
Overvoltage Protection Crowbar Protects Switching Output with No Additional External Components

APPLICATIONS
Auxiliary System Supplies for Desktop
Computer Systems
General-Purpose Low Voltage Supplies